Filling-detecting mechanism for looms.



J. W. BOUNDS & J. R. BURTON. FILLING DETECTING MECHANISM FOR LooMs. APPLIOATION FILED JUNE 8, 1908.

Patented Dec. 15, 1908.

JOHN W. BOUNDS AND JOHNR. BURTON, OF CHARLOTTE, NORTH CAROLINA, ASSIGNORS TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS. A CORPORATION OF MAINE.

FILLING-DETECTING MECHANISM FOR LOOMS.

- To all whom it may concern:

Be it known that we, JOHN W. BOUNDS and JonnR. BURTON, citizens of the United States, and residents of Charlotte, county of Mecklenburg, State of North Carolina, have invented an Improvement in Filling-Detecting Mechanism for Looms, of which the ,fol

.lowing description, in connection with the 1906 and the novel structure accompanying drawing,-is .a specification,

like letters onthe parts. a

This invention relates mechanism for looms, j set the bending 0 drawing representing like to filling-detecting and it has for its obiproduction of means to revent the coupling member or tail of the fork out of range of cooperating portions of rigidly to its free end, said bar being enoil while the fork is in ga 'ed between an abutment on the slide and enl argements or shoulders on a vibrating actuat' member or hook whenever filling absence is detected, to thereby effect opera' tive movement of the slide. The shoulders or enlargements are so-shaped that on the return or inactive stroke of the hook they will ride up and over the bar of the forletail, thereby preventing movement of the fork a such time. r

In the present embodiment of our invention we make the cou ling member or fork tail of sheet metal? and substantially T-sha ed, and the shoulders on the hook engage t e transverse extension at the free end of said member when filling absence is detected, the abutment on the fork-slide being eliminated:

In practice it has been found CllfIlCllll) to harden the particular fork and its tail herein illustrated, the said parts being preferably made from a single piece of metal, and'consequently the tail or coupling member can be and frequently is bent by manipulation place on the loom, so that the actuating member or hook cannot co- Specification of Letters Patent.

Application filed June a. 1908.

Patented Dec. 15, 1908. Serial No. 437,263.

operate therewith. This-.is liable to make ble is'located and the tail is bent backtoproper position. breakage will occur, after a few bendings, and sometimes after the first one. initial bending is prevented, so that the coupling member cannot-be'dis laced from operative position relatively to t e actuating member, and as the initial bending is pre' vented there is no bending back required, hence the breakage-above noted is obviated. The various novel features ofaour invention will be fully described in the subjoined speci fication and particularly pointed out in the following claims.

Fi ure 1 is a top plan view of a the filling-detecting mechanism 0 with one embodiment of ourinvention ap plied thereto; Fig. 2 isa side elevation and partial section on the irregular line 22, 1 1.

The bifurcated slide 1 is provided at its portion of a loom,

We have provided means whereby the 1 rear end with a transverse in 2 which forms the fulcrum on which t e filling-fork is mounted to rock or tilt in usual manner, a

C&Sl) metal bearing portion 3'receiving the pin, and the fork is secured to said portion 3,

In the present embodiment of our invention the fork and attached coupling member or tail are made integral, and of sheet-metal, the fork '4 being bent at its up er end around the-bearing portion 3 and ixedly secured thereto, as by-a rivet 5, andthe coupling member is made as aT-shaped prolongation comprising a shank 6 and a transverse exten sion 7 at its free end. The vibrating actuating member or weft-hammer 8 has pivotally connected with it at 9 a hook bifurcated at its rear end to present parallel cheeks 10 which have on their inner faces enlargements or shoulders 11, preferably notched on their front faces at 12, Fig. 2, substantially as in the Wood patent, the under sides of the shoulders being convexed or cam-shaped at 13. When filling absence is detected the shoulders engage the transverse extension 7 on the operative stroke of the vibrating actuator and act through the coupling member or fork-tail to move the slide outward in Well known manner. When the fork is tilted, the shoulders are movedforward beneath the extension 7 as the vibrating actuator makes its outward stroke, and on the return stroke the cam faces 13 ride up over the said member to anyv appreciable or injurious extent, and that 'beingso'thesaid cou ling d for the transverse extensiona't the free end of the-tail when filling absence is detected,- said-95 the fulcrum oi the fork any chance. of the fork vibrating when it returns to rest aiterbeing cooperation with the shoulders ofth'e hook extension 7- and drop back behind it into. the

ppsition' shown in the drawing, as in the ood patent.

orted on a crossebar'or support 14 extended "from oneto' the other part of the slide and see Fig. 2, when the-for is quiescent.

From an'inspection of Fig. 2 it will be ap-' parent that no appreciable downward bend mg of the taller coupling member can be effected, for the elongated stop or" rest 15 prevents it, so that there is no possibility of the extension -7 being bento'ut or the path'of the notched faces 12 of the shoulders 11. By eliminating the. downward-bending of the shank 6 we'do away with'any occasion for bending it upward for the purpose of strai hte'ning it, .so that the breakage hereinbe ore noted isdone away with. In order to position the fork when quiescent we maket e rear end of the stop 15 slightly higher than therest' of the stop, as at 16, the shank 6 resting u on' such -elevation,'as shown. Fig. 2. y this engagementjoiwthe tail with part 16 of the stop at apointnear the tilted .is materially lessened. It be notedthat the top of the stop 15 is so close to the couplin rest that it is practically impossible to'bend member is always properly-positione when the fork detects filling absence.

Having fully described our, invention, what we claim as new and desire to secure by Letters Patent is z 1.," The combination, Withfa filling-fork having a tail: pro,v1ded with a transverse extension at its free end, a slide on which the fork is fulcrumed, and a vibrating member having shoulders'to engage the extension at gYPOSItQ sides of the tail upon dete'ctionof ling absence, t'oeflect operative movement .of the-slide, of a transverse support on-the" slide to sustain the vibrating member, and a central, elongated" stop on said support "ex tended beneath the tail of the fork and closelyadjacent thereto the major portion of it length when the fork is normal pose- The hook 10-is slidably sfupnear the 'fork fulcrum an memberwher'iltl'le fork is' at eee tion,.to prevent bending and displacement of the fork tail at any po'rntabove the stop.

2: The combination, with a-tiltingjfillmg' ,forl; having a T-shaped con ling member connected therewith, and a side on which the fork is fulcrumed, of a .vbirating hook to engage the transverse free end of said con ling...-me1nber. upon-detection of filling a sence and efiectoperative movementv of the slide, and an elongated sto rigidly mounted on the slide and extended eneath' the coupling member the major portion of its le'n th and closely adjacent thereto when the for untilted, .to prevent displacement of the "(0 couplin member by'bending at any'point above t e stop, the end of the stop nearest the fork fulcrum engaging the couplmgmemberthereat'to limit its normal descent;

The combination, with a tilting filling fork having a T-shaped sheet-metal tail, and

a slide on which the fork is fulcrumed, of avibrating hook having laterally sefparated shoulders to engage the. transverse ree end of the tail when filling absence is detected and effect operative movement of the slide, .a cross-bar on the latter upon which. the hook travels, and a central safety .stop on the I cross-bar extended under the forktailfor the major stop be ng elevated slight g to engage the tail 1 limit its, descent, the 'sto ilpi'eventing bending of the tail out-of thepat "of the hook shoulders hllingiork andanintegral-,'T-shaped tail, and a sh e on which the fork is fulcrumed, of a vibrating hook having. shoulders to engage shoulders ridin up over's'aid extension on the return stroke 0 th hook, and a cross-bar on the slide to support the hook, said cross-bar havin an" integral central safety stop extende [,beneath and close to theiork tail for 100 v the major portion of its lengthwhen the fork :is uiescent, to prevent bending down of the tai and its displacement relatively to the hook shoulders' In'testimony whereof w'e-have' signedomj 105 names to this specification, in the presence of two subscribing witnesses. Y

JOHN W. BOUNDS.

Witnesses:

ARTHUR, J. Deanna. E. 0. DwnLLn,

ortion of its len th, the tip'of the 4.v The combination, with 'a sheet-metal 

